Sara on PR #629 round 3: the round-2 fix captured the fetch count AFTER
typing '@', so a regression that re-introduced the legacy per-keystroke
items() callback would have its '@'-keystroke fetch silently absorbed
into the baseline. Drop the baseline subtraction and count every
/api/persons fetch since render — typing '@' + fill('Walter') must
total exactly one fetch.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
4f469db02e